[an-tee-vahy-tuh-min, an-tahy- or, British, -vit-uh-min]

noun Biochemistry.

any substance that interferes with the action of a vitamin.

Origin of antivitamin

First recorded in 1925–30; anti- + vitamin Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

anti-vitamin in Medicine


[ăn′tē-vītə-mĭn, ăn′tī-]


A substance that prevents a vitamin from exerting its typical metabolic effects.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.